APA استشهاد

Hems, D. A. (1970). Biologically active substances exploration and exploitation. The Ronald Press Co.John Wiley.

استشهاد بنمط شيكاغو

Hems, D. A. Biologically Active Substances Exploration and Exploitation. New York: The Ronald Press Co.John Wiley, 1970.

MLA استشهاد

Hems, D. A. Biologically Active Substances Exploration and Exploitation. The Ronald Press Co.John Wiley, 1970.